/* CSS变量定义 */
:root {
    /* 主要颜色 */
    --primary-color: #0071e3;
    --primary-dark: #0051b3;
    --primary-light: #4096ff;
    --secondary-color: #34c759;
    --accent-color: #ff9500;
    
    /* 中性色 */
    --text-primary: #111827;
    --text-secondary: #4b5563;
    --text-muted: #6b7280;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --border-color: #e5e7eb;
    --border-light: #f3f4f6;
    
    /* 字体 */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;    /* 12px */
    --font-size-sm: 0.875rem;   /* 14px */
    --font-size-base: 1rem;     /* 16px */
    --font-size-lg: 1.125rem;   /* 18px */
    --font-size-xl: 1.25rem;    /* 20px */
    --font-size-2xl: 1.5rem;    /* 24px */
    --font-size-3xl: 1.875rem;  /* 30px */
    --font-size-4xl: 2.25rem;   /* 36px */
    --font-size-5xl: 3rem;      /* 48px */
    --font-size-6xl: 3.75rem;   /* 60px */
    
    /* 间距 */
    --spacing-1: 0.25rem;       /* 4px */
    --spacing-2: 0.5rem;        /* 8px */
    --spacing-3: 0.75rem;       /* 12px */
    --spacing-4: 1rem;          /* 16px */
    --spacing-5: 1.25rem;       /* 20px */
    --spacing-6: 1.5rem;        /* 24px */
    --spacing-8: 2rem;          /* 32px */
    --spacing-10: 2.5rem;       /* 40px */
    --spacing-12: 3rem;         /* 48px */
    --spacing-16: 4rem;         /* 64px */
    --spacing-20: 5rem;         /* 80px */
    --spacing-24: 6rem;         /* 96px */
    --spacing-32: 8rem;         /* 128px */
    
    /* 圆角 */
    --radius-sm: 0.125rem;      /* 2px */
    --radius: 0.25rem;          /* 4px */
    --radius-md: 0.375rem;      /* 6px */
    --radius-lg: 0.5rem;        /* 8px */
    --radius-xl: 0.75rem;       /* 12px */
    --radius-2xl: 1rem;         /* 16px */
    --radius-3xl: 1.5rem;       /* 24px */
    --radius-full: 9999px;
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* 过渡 */
    --transition-fast: 150ms ease-in-out;
    --transition: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* 基础样式重置 */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    line-height: 1.5;
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    line-height: 1.6;
}

/* 链接样式 */
a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* 列表样式 */
ul, ol {
    list-style: none;
}

/* 图片样式 */
img {
    max-width: 100%;
    height: auto;
    vertical-align: middle;
}

/* 容器样式 */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-4);
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3) var(--spacing-6);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: 500;
    line-height: 1.5;
    text-align: center;
    text-decoration: none;
    white-space: nowrap;
    border-radius: var(--radius-lg);
    transition: all var(--transition);
    cursor: pointer;
    user-select: none;
    border: none;
    outline: none;
}

.btn--primary {
    background-color: var(--primary-color);
    color: white;
}

.btn--primary:hover {
    background-color: var(--primary-dark);
    color: white;
    text-decoration: none;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn--primary:active {
    transform: translateY(0);
    box-shadow: var(--shadow);
}

.btn--outline {
    background-color: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.btn--outline:hover {
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn--outline:active {
    transform: translateY(0);
    box-shadow: var(--shadow);
}

.btn--ghost {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn--ghost:hover {
    background-color: var(--bg-secondary);
    text-decoration: none;
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.btn--ghost:active {
    transform: translateY(0);
}

.btn--large {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: var(--font-size-lg);
}

/* 标题样式 */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: var(--spacing-4);
}

h1 {
    font-size: var(--font-size-5xl);
}

h2 {
    font-size: var(--font-size-4xl);
}

h3 {
    font-size: var(--font-size-2xl);
}

h4 {
    font-size: var(--font-size-xl);
}

/* 段落样式 */
p {
    margin-bottom: var(--spacing-4);
    color: var(--text-secondary);
}

/* 导航栏样式 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: var(--z-fixed);
    transition: all var(--transition);
    border-bottom: 1px solid var(--border-light);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-4) 0;
}

.logo img {
    height: 36px;
}

/* 桌面导航 */
.nav-desktop {
    display: flex;
    align-items: center;
}

.nav-desktop__list {
    display: flex;
    align-items: center;
    gap: var(--spacing-6);
}

.nav-desktop__link {
    position: relative;
    display: inline-block;
    padding: var(--spacing-2) 0;
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--text-primary);
    transition: color var(--transition-fast);
}

.nav-desktop__link:hover {
    color: var(--primary-color);
    text-decoration: none;
}

.nav-desktop__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width var(--transition);
}

.nav-desktop__link:hover::after {
    width: 100%;
}

.header__actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

/* 菜单切换按钮 */
.menu-toggle {
    display: none;
    position: relative;
    width: 32px;
    height: 24px;
    background-color: transparent;
    border: none;
    cursor: pointer;
    z-index: var(--z-modal);
}

.menu-toggle__bar {
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--text-primary);
    transition: all var(--transition);
}

.menu-toggle__bar:nth-child(1) {
    top: 0;
}

.menu-toggle__bar:nth-child(2) {
    top: 50%;
    transform: translateY(-50%);
}

.menu-toggle__bar:nth-child(3) {
    bottom: 0;
}

.menu-toggle.active .menu-toggle__bar:nth-child(1) {
    top: 50%;
    transform: translateY(-50%) rotate(45deg);
}

.menu-toggle.active .menu-toggle__bar:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active .menu-toggle__bar:nth-child(3) {
    bottom: 50%;
    transform: translateY(50%) rotate(-45deg);
}

/* 移动导航菜单 */
.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: var(--bg-primary);
    z-index: var(--z-dropdown);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition);
}

.mobile-menu.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.mobile-menu__inner {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
}

.mobile-menu__list {
    text-align: center;
}

.mobile-menu__item {
    margin-bottom: var(--spacing-6);
}

.mobile-menu__link {
    display: inline-block;
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    transition: color var(--transition-fast);
}

.mobile-menu__link:hover {
    color: var(--primary-color);
    text-decoration: none;
}

.mobile-menu__link.btn {
    margin-top: var(--spacing-4);
}

/* 英雄区域样式 */
.hero {
    position: relative;
    padding: var(--spacing-32) 0 var(--spacing-20);
    background-color: var(--bg-secondary);
    overflow: hidden;
}

.hero__inner {
    display: flex;
    align-items: center;
    gap: var(--spacing-16);
}

.hero__content {
    flex: 1;
}

.hero__badge {
    display: inline-block;
    padding: var(--spacing-2) var(--spacing-4);
    margin-bottom: var(--spacing-4);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--primary-color);
    background-color: rgba(0, 113, 227, 0.1);
    border-radius: var(--radius-full);
}

.hero__title {
    margin-bottom: var(--spacing-6);
    font-size: var(--font-size-5xl);
    font-weight: 800;
    line-height: 1.1;
    color: var(--text-primary);
}

.hero__desc {
    margin-bottom: var(--spacing-8);
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
    line-height: 1.6;
}

.hero__cta {
    display: flex;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-8);
}

.hero__stats {
    display: flex;
    gap: var(--spacing-8);
    padding-top: var(--spacing-6);
    border-top: 1px solid var(--border-color);
}

.hero__stat {
    display: flex;
    flex-direction: column;
}

.hero__stat-number {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--text-primary);
}

.hero__stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.hero__visual {
    flex: 1;
    position: relative;
}

.hero__image-wrapper {
    position: relative;
    z-index: 1;
}

.hero__image {
    width: 100%;
    max-width: 500px;
}

.hero__decor {
    position: absolute;
    border-radius: 50%;
    z-index: 0;
}

.hero__decor--1 {
    width: 300px;
    height: 300px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(0, 113, 227, 0.05);
}

.hero__decor--2 {
    width: 200px;
    height: 200px;
    bottom: -50px;
    right: -50px;
    background-color: rgba(52, 199, 89, 0.1);
}

.hero__wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 60px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 60'%3E%3Cpath fill='%23ffffff' fill-opacity='1' d='M0,32L60,37.3C120,43,240,53,360,53.3C480,53,600,43,720,37.3C840,32,960,32,1080,37.3C1200,43,1320,53,1380,58.7L1440,64L1440,120L1380,120C1320,120,1200,120,1080,120C960,120,840,120,720,120C600,120,480,120,360,120C240,120,120,120,60,120L0,120Z'%3E%3C/path%3E%3C/svg%3E");
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
}

/* 品牌展示区域 */
.brands {
    padding: var(--spacing-12) 0;
    background-color: var(--bg-primary);
}

.brands__text {
    margin-bottom: var(--spacing-6);
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.brands__grid {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-8);
}

.brands__item {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.brands__logo {
    height: 40px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-sm);
    font-weight: 500;
    opacity: 0.8;
    transition: opacity var(--transition);
}

.brands__logo:hover {
    opacity: 1;
}

/* 解决方案区域 */
.solutions {
    padding: var(--spacing-24) 0;
    background-color: var(--bg-primary);
}

.solutions__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-8);
    margin-top: var(--spacing-12);
}

.solution-card {
    padding: var(--spacing-8);
    background-color: var(--bg-secondary);
    border-radius: var(--radius-2xl);
    transition: all var(--transition);
}

.solution-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.solution-card--highlight {
    background-color: var(--primary-color);
    color: white;
}

.solution-card__header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-6);
}

.solution-card__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background-color: var(--primary-color);
    border-radius: var(--radius-xl);
}

.solution-card--highlight .solution-card__icon {
    background-color: white;
}

.solution-card__title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0;
}

.solution-card--highlight .solution-card__title {
    color: white;
}

.solution-card__content {
    margin-bottom: var(--spacing-6);
}

.solution-card__desc {
    margin-bottom: var(--spacing-6);
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
}

.solution-card--highlight .solution-card__desc {
    color: rgba(255, 255, 255, 0.9);
}

.solution-card__features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.solution-card__feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    font-size: var(--font-size-base);
    color: var(--text-secondary);
}

.solution-card--highlight .solution-card__feature {
    color: rgba(255, 255, 255, 0.8);
}

.solution-card__footer {
    margin-top: var(--spacing-6);
}

.solution-card__cta {
    display: inline-block;
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--primary-color);
    background-color: white;
    border-radius: var(--radius-lg);
    transition: all var(--transition);
}

.solution-card__cta:hover {
    background-color: var(--bg-primary);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
    text-decoration: none;
}

.solution-card__cta--highlight {
    background-color: white;
    color: var(--primary-color);
}

.solution-card__cta--highlight:hover {
    background-color: var(--bg-secondary);
}

/* 核心功能区域 */
.features {
    padding: var(--spacing-24) 0;
    background-color: var(--bg-secondary);
}

.features__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-8);
    margin-top: var(--spacing-12);
}

.feature-card {
    padding: var(--spacing-8);
    background-color: var(--bg-primary);
    border-radius: var(--radius-2xl);
    transition: all var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-card__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    margin-bottom: var(--spacing-6);
    background-color: var(--bg-secondary);
    border-radius: var(--radius-2xl);
}

.feature-card__icon img {
    width: 40px;
    height: 40px;
}

.feature-card__title {
    margin-bottom: var(--spacing-4);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
}

.feature-card__desc {
    margin-bottom: var(--spacing-6);
    font-size: var(--font-size-base);
    color: var(--text-secondary);
}

.feature-card__list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.feature-card__list li {
    font-size: var(--font-size-base);
    color: var(--text-muted);
}

.features__extra {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-6);
    margin-top: var(--spacing-12);
}

.features__extra-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    padding: var(--spacing-6);
    background-color: var(--bg-primary);
    border-radius: var(--radius-xl);
    transition: all var(--transition);
}

.features__extra-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.features__extra-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background-color: rgba(0, 113, 227, 0.1);
    border-radius: var(--radius-xl);
}

.features__extra-content h4 {
    margin-bottom: var(--spacing-2);
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.features__extra-content p {
    margin-bottom: 0;
    font-size: var(--font-size-base);
    color: var(--text-secondary);
}

/* 行业应用区域 */
.industries {
    padding: var(--spacing-24) 0;
    background-color: var(--bg-primary);
}

.industries__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-8);
    margin-top: var(--spacing-12);
}

.industry-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    transition: all var(--transition);
}

.industry-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.industry-card__image {
    position: relative;
    height: 200px;
    background-color: var(--primary-color);
}

.industry-card__image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(0, 113, 227, 0.8), rgba(0, 113, 227, 0.6));
}

.industry-card__image-placeholder {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.industry-card__content {
    flex: 1;
    padding: var(--spacing-6);
}

.industry-card__title {
    margin-bottom: var(--spacing-4);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
}

.industry-card__desc {
    margin-bottom: var(--spacing-6);
    font-size: var(--font-size-base);
    color: var(--text-secondary);
}

.industry-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
}

.industry-card__tag {
    display: inline-block;
    padding: var(--spacing-1) var(--spacing-3);
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--primary-color);
    background-color: rgba(0, 113, 227, 0.1);
    border-radius: var(--radius-full);
}

/* 技术架构区域 */
.technology {
    padding: var(--spacing-24) 0;
    background-color: var(--bg-secondary);
}

.technology__inner {
    display: flex;
    align-items: center;
    gap: var(--spacing-16);
}

.technology__content {
    flex: 1;
}

.technology__features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-6);
    margin-top: var(--spacing-12);
    margin-bottom: var(--spacing-8);
}

.technology__feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    padding: var(--spacing-4);
    background-color: var(--bg-primary);
    border-radius: var(--radius-xl);
    transition: all var(--transition);
}

.technology__feature:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow);
}

.technology__feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background-color: rgba(0, 113, 227, 0.1);
    border-radius: var(--radius-lg);
}

.technology__feature-content h4 {
    margin-bottom: var(--spacing-1);
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.technology__feature-content p {
    margin-bottom: 0;
    font-size: var(--font-size-base);
    color: var(--text-secondary);
}

.technology__visual {
    flex: 1;
}

.technology__diagram {
    padding: var(--spacing-8);
    background-color: var(--bg-primary);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow);
}

.tech-layer {
    margin-bottom: var(--spacing-6);
    padding: var(--spacing-4);
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
}

.tech-layer__title {
    margin-bottom: var(--spacing-3);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.tech-layer__items {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-3);
}

.tech-item {
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-sm);
}

/* 定价方案区域 */
.pricing {
    padding: var(--spacing-24) 0;
    background-color: var(--bg-primary);
}

.pricing__toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-4);
    margin: var(--spacing-8) 0 var(--spacing-12);
}

.pricing__toggle-label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
}

.pricing__toggle-switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 30px;
}

.pricing__toggle-input {
    opacity: 0;
    width: 0;
    height: 0;
}

.pricing__toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--border-color);
    transition: var(--transition);
    border-radius: var(--radius-full);
}

.pricing__toggle-slider:before {
    position: absolute;
    content: "";
    height: 22px;
    width: 22px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: var(--transition);
    border-radius: 50%;
}

.pricing__toggle-input:checked + .pricing__toggle-slider {
    background-color: var(--primary-color);
}

.pricing__toggle-input:focus + .pricing__toggle-slider {
    box-shadow: 0 0 1px var(--primary-color);
}

.pricing__toggle-input:checked + .pricing__toggle-slider:before {
    transform: translateX(30px);
}

.pricing__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-8);
}

.pricing-card {
    padding: var(--spacing-8);
    background-color: var(--bg-secondary);
    border-radius: var(--radius-2xl);
    transition: all var(--transition);
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.pricing-card--popular {
    position: relative;
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-10px);
}

.pricing-card__badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--spacing-1) var(--spacing-4);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--primary-color);
    background-color: white;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.pricing-card__header {
    margin-bottom: var(--spacing-6);
}

.pricing-card__title {
    margin-bottom: var(--spacing-2);
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
}

.pricing-card--popular .pricing-card__title {
    color: white;
}

.pricing-card__subtitle {
    font-size: var(--font-size-base);
    color: var(--text-muted);
}

.pricing-card--popular .pricing-card__subtitle {
    color: rgba(255, 255, 255, 0.8);
}

.pricing-card__price {
    display: flex;
    align-items: baseline;
    margin-bottom: var(--spacing-8);
}

.pricing-card__currency {
    font-size: var(--font-size-xl);
    font-weight: 500;
    color: var(--text-primary);
}

.pricing-card--popular .pricing-card__currency {
    color: white;
}

.pricing-card__number {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--text-primary);
}

.pricing-card--popular .pricing-card__number {
    color: white;
}

.pricing-card__period {
    font-size: var(--font-size-lg);
    font-weight: 500;
    color: var(--text-muted);
    margin-left: var(--spacing-2);
}

.pricing-card--popular .pricing-card__period {
    color: rgba(255, 255, 255, 0.8);
}

.pricing-card__features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-8);
}

.pricing-card__feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    font-size: var(--font-size-base);
    color: var(--text-secondary);
}

.pricing-card--popular .pricing-card__feature {
    color: rgba(255, 255, 255, 0.9);
}

.pricing-card__feature--disabled {
    opacity: 0.5;
}

.pricing-card__footer {
    text-align: center;
}

/* 客户评价区域 */
.testimonials {
    padding: var(--spacing-24) 0;
    background-color: var(--bg-secondary);
}

.testimonials__slider {
    max-width: 800px;
    margin: 0 auto var(--spacing-8);
    position: relative;
}

.testimonial-slide {
    padding: var(--spacing-8);
    background-color: var(--bg-primary);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow);
}

.testimonial-slide__content {
    margin-bottom: var(--spacing-6);
}

.testimonial-slide__quote {
    margin-bottom: var(--spacing-6);
}

.testimonial-slide__text {
    margin-bottom: var(--spacing-6);
    font-size: var(--font-size-lg);
    font-weight: 500;
    color: var(--text-secondary);
    line-height: 1.7;
    font-style: italic;
}

.testimonial-slide__rating {
    display: flex;
    gap: var(--spacing-1);
}

.testimonial-slide__author {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.testimonial-slide__author-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-color: var(--bg-secondary);
}

.testimonial-slide__author-name {
    margin-bottom: var(--spacing-1);
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.testimonial-slide__author-company {
    font-size: var(--font-size-base);
    color: var(--text-muted);
}

.testimonials__indicators {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-3);
}

.testimonial-indicator {
    width: 12px;
    height: 12px;
    background-color: var(--border-color);
    border-radius: 50%;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
}

.testimonial-indicator:hover,
.testimonial-indicator--active {
    background-color: var(--primary-color);
    transform: scale(1.2);
}

/* 行动召唤区域 */
.cta {
    padding: var(--spacing-24) 0;
    background-color: var(--primary-color);
    color: white;
}

.cta__inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-12);
    text-align: center;
}

.cta__title {
    margin-bottom: var(--spacing-4);
    font-size: var(--font-size-4xl);
    font-weight: 800;
    color: white;
    line-height: 1.2;
}

.cta__desc {
    margin-bottom: 0;
    font-size: var(--font-size-xl);
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.6;
    max-width: 600px;
}

.cta__form {
    width: 100%;
    max-width: 500px;
}

.demo-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.demo-form__group {
    display: flex;
    flex-direction: column;
}

.demo-form__input {
    padding: var(--spacing-4);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--text-primary);
    background-color: white;
    border: none;
    border-radius: var(--radius-lg);
    outline: none;
    transition: all var(--transition);
}

.demo-form__input:focus {
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.3);
}

.demo-form__submit {
    width: 100%;
    padding: var(--spacing-4);
    font-family: var(--font-family);
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary-color);
    background-color: white;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition);
}

.demo-form__submit:hover {
    background-color: var(--bg-secondary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.demo-form__submit:active {
    transform: translateY(0);
    box-shadow: var(--shadow-md);
}

/* 页脚样式 */
.footer {
    padding: var(--spacing-16) 0;
    background-color: var(--text-primary);
    color: white;
}

.footer__inner {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-12);
}

.footer__logo img {
    height: 40px;
}

.footer__nav {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-8);
}

.footer__nav-group h4 {
    margin-bottom: var(--spacing-4);
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: white;
}

.footer__nav-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.footer__nav-link {
    font-size: var(--font-size-base);
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast);
}

.footer__nav-link:hover {
    color: white;
    text-decoration: none;
}

.footer__bottom {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-6);
    padding-top: var(--spacing-8);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__social {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.footer__social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    transition: all var(--transition);
}

.footer__social-link:hover {
    background-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-3px);
    text-decoration: none;
}

.footer__copyright p {
    margin-bottom: 0;
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.5);
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .hero__inner,
    .technology__inner {
        gap: var(--spacing-12);
    }
    
    .hero__title,
    .cta__title {
        font-size: var(--font-size-4xl);
    }
}

@media (max-width: 992px) {
    .nav-desktop {
        display: none;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .hero__inner,
    .technology__inner {
        flex-direction: column;
        text-align: center;
    }
    
    .hero__cta {
        justify-content: center;
    }
    
    .hero__stats {
        justify-content: center;
    }
    
    .solutions__grid {
        grid-template-columns: 1fr;
    }
    
    h1 {
        font-size: var(--font-size-4xl);
    }
    
    h2 {
        font-size: var(--font-size-3xl);
    }
    
    .hero__title,
    .cta__title {
        font-size: var(--font-size-3xl);
    }
}

@media (max-width: 768px) {
    .hero {
        padding: var(--spacing-24) 0 var(--spacing-16);
    }
    
    .features__grid,
    .industries__grid,
    .pricing__grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-card--popular {
        transform: translateY(0);
    }
    
    h1 {
        font-size: var(--font-size-3xl);
    }
    
    h2 {
        font-size: var(--font-size-2xl);
    }
    
    .hero__title,
    .cta__title {
        font-size: var(--font-size-2xl);
    }
    
    .hero__desc,
    .cta__desc {
        font-size: var(--font-size-base);
    }
    
    .btn--large {
        padding: var(--spacing-3) var(--spacing-6);
        font-size: var(--font-size-base);
    }
}

@media (max-width: 576px) {
    .hero {
        padding: var(--spacing-20) 0 var(--spacing-12);
    }
    
    .brands__grid {
        flex-wrap: wrap;
        gap: var(--spacing-4);
    }
    
    .brands__item {
        flex: 1 1 calc(50% - var(--spacing-4));
    }
    
    .pricing__toggle {
        flex-direction: column;
        gap: var(--spacing-2);
    }
    
    .testimonial-slide__text {
        font-size: var(--font-size-base);
    }
    
    .demo-form__submit {
        font-size: var(--font-size-base);
    }
}

/* FAQ部分样式 */
.faq {
    padding: var(--spacing-24) 0;
    background-color: var(--bg-primary);
}

.faq__grid {
    margin-top: var(--spacing-12);
}

.faq__item {
    margin-bottom: var(--spacing-4);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition);
}

.faq__item:hover {
    box-shadow: var(--shadow);
}

.faq__question {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: var(--spacing-6);
    background-color: var(--bg-secondary);
    border: none;
    font-family: var(--font-family);
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    text-align: left;
    cursor: pointer;
    transition: all var(--transition);
}

.faq__question:hover {
    background-color: var(--bg-tertiary);
}

.faq__question-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    background-color: var(--bg-primary);
    border-radius: var(--radius-full);
    transition: all var(--transition);
}

.faq__question-icon svg {
    width: 16px;
    height: 16px;
    color: var(--primary-color);
    transition: transform var(--transition);
}

.faq__item.active .faq__question-icon svg {
    transform: rotate(180deg);
}

.faq__answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow), padding var(--transition);
    background-color: var(--bg-primary);
}

.faq__answer-content {
    padding: 0 var(--spacing-6);
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    line-height: 1.6;
}

.faq__item.active .faq__answer {
    max-height: 500px;
}

.faq__item.active .faq__answer-content {
    padding: var(--spacing-6);
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-fade-in.animated {
    opacity: 1;
    transform: translateY(0);
}

.animate-scale-in {
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-scale-in.animated {
    opacity: 1;
    transform: scale(1);
}

/* 延迟动画 */
.delay-100 {
    animation-delay: 100ms;
}

.delay-200 {
    animation-delay: 200ms;
}

.delay-300 {
    animation-delay: 300ms;
}

.delay-400 {
    animation-delay: 400ms;
}

.delay-500 {
    animation-delay: 500ms;
}

/* 滚动到顶部按钮 */
.scroll-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: white;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-lg);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
    z-index: var(--z-fixed);
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    background-color: var(--primary-dark);
    transform: translateY(-3px);
}